Wrench



Jun12r1928. 1,673,221

E. BERTA WRENCH Filed Jun 4, 1926 2 Sheets-Sheet l gwuenfoz June 12, 1928. 1,673,221

IE. BERTA WRENCH Fi led June 4, 1926 2 Sheets-Sheet 2 I IIIIIIIIIII\II:

Patented June 12, 1928.

UNITED STATES EMII. BERTA, or J'OLIET, ILLINoIs.

WRENCH. I

Application filed June 4,

This invention relates to new and useful improvements in wrenches for pipes, nuts and the like, and has for its object to provide a wrench that is self-adjustable and self-releasable and for this reason may be quickly adjusted to pipes, nuts or other articles of varying size and quickly released from the article when desired.

A further object of my invention is to provide a wrench of this character that is very economical in cost and highly efficient, practical and durable in use.

With the foregoing and other objects in view that will appear as the nature of my invention is better understood, the same consists in the novel features of construction, combination and arrangement of parts illustrated in the accompanying drawings and more particularly pointed out in the appended claim.

In the accompanying drawings, which are for illustrative purposes only and are therefore not drawn to scale:

Figure 1 is a side elevation of a wrench embodying my improvements, the jaws closed.

Figure 2 is a similar view, the jaws open.

Figure 3 is a plan view of Figure 1.

Figure 4 is a central longitudinal section of Figure 1.

Figure 5 is a vertical transverse section, taken on line 55 of Figure 4 and looking in the direction indicated by the arrows.

Figure 6 is a horizontal section, taken on line 6-6 of Figure 4.

Figure 7 is a'vertical transverse section, taken on line 7-7 of Figure 1, looking in the direction indicated by the arrows.

Figure 8 is a similar-view, taken on line 88 of Figure 1.

Figure 9 is a detailed perspective view of the fixed or stationary jaw.

Figure 10 is a similar view of the movable aw. 1 Figure 11 is a detailed fragmentary perspective view of the frame bar.

Figure 12 is a similar view of the movable jaw carrying sleeve or member and Figures 13 and 14 are detail side views of a modified form of the fixed and movable jaws, respectively.

Referring to the drawings for a more particular description of my invention and in which drawings like parts are designated by like reference characters throughout the several views, my wrench essentially com- 1926. Serial No. 113,697.

prises a fixed jaw 1, a movable jaw 2, a horizontal frame bar 3 to which the fixed jaw is fastened, a longitudinally movable sleeve 4 which carries the movable jaw 2, and the operating handle 5.

In carrying out my invention, the front end of the frame bar 3 is recessed or cutaway, as at 6, and the fixed jaw provided at its inner end with an off-set portion 7 which is secured to the recessed front end of the frame bar 3 by the transverse fastening screws 8 or other equivalent means. The sleeve 4 is mounted to slide back and forth over the frame bar 3 and is formed at its front or outer .end with an enlarged substantially square head or socket 9 to snugly receive a substantially square hollow head 10 formed at the inner end of the movable jaw 2. The head 10 is fastened in the socket 9 by the transverse screws 11 or other equivalent means. As shown, the inner or rear end of the frame bar 3 is provided with an arm 12 which extends upwardly and rearwardly at an angle of approximately 45 degrees and to the upper end of which is pivoted or fulcrumed, as at 13, the operating andle 5.' The lower end of handle 5 is provided with a depending forwardly inclined fork 15, the lower ends of whose tines ormembers straddle the inner or rear ends of the side members of the sleeve 4 and are loosely and pivotally connected therewith by the slot and bolt connection 18 and 19 or other equivalent means.

In practice, the jaws 1 and 2may be spread apart by the simple expedient of pulling upwardly on the handle 5, as illustrated in Figure 2 and may be quickly and readily engaged with the pipe, nut or other article by pressing down on the handle 5, which causes the movable jaw andsleeve to slide forwardly'on the frame bar 3. If desired, the inner or gripping edges of the fixed and movable jaws may be formed with teeth or serrations 20 and 21, respectively, in order to more securely engage or grip the article.

From the foregoing description taken in connection with the drawings it is thought that the construction, operation and advantages of my invention will be readily understood without requiring a more extended explanation.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

In a device of the character specified, a

frame bar, a fixedor stationary jaw secured forwardly inclined fork and a slot and bolt to the'front end of said frame "bar, a sleeve connection for loosely and pivotallytconnectslidably mounted on said bar, a rnor eble ingtl e fork With the sleeve. 10

jaw carried b the front end of seid sleeve, In testimony whereof he afiixes his sigi 5 an arm exten ing upwardly and rearwardly "nature; i 1

from the frame bar, a handle pivoted to,

said arm and provided with 2, depending EMIL BERTA. 

